Ultimate strength prediction of braided textile composites using a multi-scale approach

Lei Xu, Cheng Zhu Jin, SungKyu Ha

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

In this paper, the strength of braided textile composites is predicted using a multi-scale approach bridging the mesoscale and microscale regimes. Mesoscale finite element models of representative unit cells of biaxial and triaxial braided composites are developed for predicting strength. The constituent stresses of tows inside the braided unit cell are calculated using micromechanics. Correlations between mesoscale stresses and microscale constituent stresses are established by using stress amplification factors. After calculating microscale stresses, a micromechanics-based progressive damage model is employed to determine the damage statuses of braided composites. A volume-averaging homogenization method is utilized to eliminate damage localization in the matrix of tows, and a parametric study is performed to evaluate the effects of damage homogenization. Subsequently, the ultimate strength is predicted for braided composites in which the braiding angle ranges from 15° to 75°. The prediction results are compared with the experimental values, and good agreement is observed.

Original languageEnglish
Pages (from-to)477-494
Number of pages18
JournalJournal of Composite Materials
Volume49
Issue number4
DOIs
StatePublished - 2015 Feb 22

Fingerprint

Textiles
Composite materials
Micromechanics
Homogenization method
Amplification

Keywords

  • Braided textile composites
  • micromechanics
  • progressive damage
  • ultimate strength prediction

Cite this

@article{bd679e924f22437388f67a2daffc3c95,
title = "Ultimate strength prediction of braided textile composites using a multi-scale approach",
abstract = "In this paper, the strength of braided textile composites is predicted using a multi-scale approach bridging the mesoscale and microscale regimes. Mesoscale finite element models of representative unit cells of biaxial and triaxial braided composites are developed for predicting strength. The constituent stresses of tows inside the braided unit cell are calculated using micromechanics. Correlations between mesoscale stresses and microscale constituent stresses are established by using stress amplification factors. After calculating microscale stresses, a micromechanics-based progressive damage model is employed to determine the damage statuses of braided composites. A volume-averaging homogenization method is utilized to eliminate damage localization in the matrix of tows, and a parametric study is performed to evaluate the effects of damage homogenization. Subsequently, the ultimate strength is predicted for braided composites in which the braiding angle ranges from 15° to 75°. The prediction results are compared with the experimental values, and good agreement is observed.",
keywords = "Braided textile composites, micromechanics, progressive damage, ultimate strength prediction",
author = "Lei Xu and Jin, {Cheng Zhu} and SungKyu Ha",
year = "2015",
month = "2",
day = "22",
doi = "10.1177/0021998314521062",
language = "English",
volume = "49",
pages = "477--494",
journal = "Journal of Composite Materials",
issn = "0021-9983",
number = "4",

}

Ultimate strength prediction of braided textile composites using a multi-scale approach. / Xu, Lei; Jin, Cheng Zhu; Ha, SungKyu.

In: Journal of Composite Materials, Vol. 49, No. 4, 22.02.2015, p. 477-494.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ultimate strength prediction of braided textile composites using a multi-scale approach

AU - Xu, Lei

AU - Jin, Cheng Zhu

AU - Ha, SungKyu

PY - 2015/2/22

Y1 - 2015/2/22

N2 - In this paper, the strength of braided textile composites is predicted using a multi-scale approach bridging the mesoscale and microscale regimes. Mesoscale finite element models of representative unit cells of biaxial and triaxial braided composites are developed for predicting strength. The constituent stresses of tows inside the braided unit cell are calculated using micromechanics. Correlations between mesoscale stresses and microscale constituent stresses are established by using stress amplification factors. After calculating microscale stresses, a micromechanics-based progressive damage model is employed to determine the damage statuses of braided composites. A volume-averaging homogenization method is utilized to eliminate damage localization in the matrix of tows, and a parametric study is performed to evaluate the effects of damage homogenization. Subsequently, the ultimate strength is predicted for braided composites in which the braiding angle ranges from 15° to 75°. The prediction results are compared with the experimental values, and good agreement is observed.

AB - In this paper, the strength of braided textile composites is predicted using a multi-scale approach bridging the mesoscale and microscale regimes. Mesoscale finite element models of representative unit cells of biaxial and triaxial braided composites are developed for predicting strength. The constituent stresses of tows inside the braided unit cell are calculated using micromechanics. Correlations between mesoscale stresses and microscale constituent stresses are established by using stress amplification factors. After calculating microscale stresses, a micromechanics-based progressive damage model is employed to determine the damage statuses of braided composites. A volume-averaging homogenization method is utilized to eliminate damage localization in the matrix of tows, and a parametric study is performed to evaluate the effects of damage homogenization. Subsequently, the ultimate strength is predicted for braided composites in which the braiding angle ranges from 15° to 75°. The prediction results are compared with the experimental values, and good agreement is observed.

KW - Braided textile composites

KW - micromechanics

KW - progressive damage

KW - ultimate strength prediction

UR - http://www.scopus.com/inward/record.url?scp=84921340376&partnerID=8YFLogxK

U2 - 10.1177/0021998314521062

DO - 10.1177/0021998314521062

M3 - Article

AN - SCOPUS:84921340376

VL - 49

SP - 477

EP - 494

JO - Journal of Composite Materials

JF - Journal of Composite Materials

SN - 0021-9983

IS - 4

ER -